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US3933832A
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N-(1-(ω-phenyl-alkyl)-piperidyl-4)-N-(α-pyridyl)-carboxylic acid amides and salts thereof
Assignee: Boehringer Ingelheim GmbH
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Filing: 1974-08-14
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Granted: 1976-01-20
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Expires: 1994-08-14
Abstract
Abstract Compounds of the formula WHEREIN R is straight or branched alkyl of 1 to 3 carbon atoms, alkoxy of 1 to 2 carbon atoms or phenyl, and N IS AN INTEGER FROM 2 TO 4, INCLUSIVE, AND NON-TOXIC, PHARMACOLOGICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF; THE COMPOUNDS AS WELL AS THE SALTS ARE USEFUL AS NON-NARCOTIC ANALGESICS.
Inventors
- 👤 Adolf Langbein
- 👤 Herbert Merz
- 👤 Gerhard Walther
- 👤 Klaus Stockhaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:00
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/56; C07D211/58
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
44 words
A compound of the formula ##SPC15## wherein R is alkyl of 1 to 3 carbon atoms, alkoxy of 1 to 2 carbon atoms or phenyl, and n is an integer from 2 to 4, inclusive, or a non-toxic, pharmacologically acceptable acid addition salt thereof.
Claim 2
Dependent Claim
44 words
A compound of the formula ##SPC15## wherein R is alkyl of 1 to 3 carbon atoms, alkoxy of 1 to 2 carbon atoms or phenyl, and n is an integer from 2 to 4, inclusive, or a non-toxic, pharmacologically acceptable acid addition salt thereof.
Claim 3
Dependent Claim
17 words
A compound of claim 1, which is 4-[N-(α-pyridyl)-N-(ethoxycarbonyl)-amino]-1-phenethyl-piperidine or a nontoxic, pharmacologically acceptable acid addition salt thereof.
Claim 4
Dependent Claim
17 words
A compound of claim 1, which is 4-[N-(α-pyridyl)-N-propionyl-amino]-1-phenethyl-piperidine or a non-toxic, pharmacologically acceptable acid addition salt thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |